SNOWFLAKE, ARIZONA

Period of Record General Climate Summary - Growing Degree Days

Station:(028012) SNOWFLAKE
From Year=1897 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 18 46 139 314 561 814 1022 967 731 418 115 22 5168
40 S 18 64 203 517 1078 1893 2915 3882 4613 5031 5146 5168 5168
45 M 3 10 54 183 408 664 867 812 581 273 43 4 3901
45 S 3 13 67 249 657 1322 2189 3001 3582 3855 3898 3901 3901
50 M 0 2 12 80 261 515 712 657 432 146 10 0 2826
50 S 0 2 14 94 355 870 1582 2239 2670 2816 2826 2826 2826
55 M 0 0 2 22 134 366 557 502 285 55 1 0 1924
55 S 0 0 2 24 158 524 1081 1583 1868 1923 1924 1924 1924
60 M 0 0 0 3 47 225 403 347 150 11 0 0 1186
60 S 0 0 0 3 50 275 678 1025 1175 1186 1186 1186 1186
Corn Growing Degree Days
50 M 43 87 169 281 423 536 646 621 493 344 154 53 3851
50 S 43 130 300 581 1004 1540 2185 2807 3300 3644 3798 3851 3851
M = Monthly Data
S - Running sum of monthly data.
Growing Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
Table updated on Oct 31, 2012
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu